A week after declassified CIA documents came to light verifying that the U.S. spy agency was behind a 1953 coup in Iran, parliamentarians in the Islamic Republic voted Tuesday to fast-track a lawsuit against Washington for interfering in Iranian domestic political affairs.

Sections of an internal CIA history of the operation that ousted Iranian Prime Minister Mohammad Mosaddeq and paved the way for the return of the exiled Shah Mohammed Reza Pahlavi were declassified two years ago but made public only Aug. 19 by the National Security Archive, an independent documentation research center in Washington.

The shah’s return was followed by years of brutal political reprisals and confrontation, leading to the 1979 Islamic Revolution and the shah’s second flight into exile. The deposed monarch took refuge in several countries before being granted a brief U.S. stay for medical treatment that poisoned to this day relations between Washington and the religious leadership in Tehran. The shah died in Egypt in 1980.